Berth-light construction



2 Sheets-Sheet 1 Nov. l0, l925- E.S. ,M. MACNAB BVERTH LIGHT CONSTRUCTION Filed May 13, 1920 [lll/lll 1 f l f. Il e /r/ o 4, Q

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Nv.1o,1925- f 1,560,835

Y E. S. M. MACNAB BERTH LIGHT CONS TRUCTI ON Filed May 13, 1920 2 Sheets-Sheet 2 Patented Nov. 10, 1925.

UNITE-D STAT E Si Parnu- EDWARD s. M. MACNAB, oF MONTREAL', QUEBEC', CANADA, AssIGnon iomnn saETY CAR HEATING sa LIGHTING COMPANY, A'- ,conPon'ArroN ler 'NEWLJERSE`Y- y Y- Damn-LIGHT coNsTnUcrroNgf f Appiication mea my 1a, 1920. `serial Neasden.

T 0 all whom t may concern.' c 5 t;

Be it known that I, EDWARDS'.k Mi MAo NAB, a subject of Great Britain, and a resi-1 dent of Montreal, in the Province of Quebec', Dominion of Canada, have invented an 1mprovement in Berth-Light Constructions, of which the following is a specification.

This invention relates. to the construction of berth lights for railway f cars and the like. One of the objects thereof is to provide a simple construction of the above type which shall be durable and essentially practical. Another object is to provide a con# struction of thel above type in' which the light is efliciently and economically handled. Other objectswill be in part obvious and in part pointed out hereinafter.

Theinvention accordingly consists in the features of constructionand in the relation of each of such features toonevor'more `of the others'thereof as will-be i-llustrativelyset forth and defined in the following claims.

In the accompanying drawing in 'which is shown one of the various possible embodi-v ments of this invention, if

Fig. 1 is a longitudinal vertical section taken on the line '1411 of;Fi`g'.2.

Fig. 2 is a front elevation.

Similar reference characters refer to similar parts throughout the several views of the drawings.

Referring to Fig. 1 of the drawing, there is shown at l0 a wall, which is preferably the inner member of the side of a railway car. It may hereafter be noted, however, that the term wall, unless otherwise provided, is to be broadly interpreted. It is also tobe understood that this portion of the wall shown is slightly above the berth, a poition ordinarily occupied by railway berth ights. c

The wall 10 is provided with an aperture 11 and has fitted therein a casing 12 substantially like the form shown. This casing is provided with a flange 13, preferably countersunk in the wall, soas to be substantially flush with the outer surface thereof.

vMounted within the casing 12 is an ordinary socket 14 for an electric bulb, the wiring of which is controlled by the switch-15, the details of neither of these parts being shown, as they form in themselves no portion of the present invention. Y

The switch 15 is mounted upon theY inner surface of the outer plate 16, through-which thel controlling buttons 17 project- This v plate is secured as at 18to thecasing 121and its upper portion 19 is so shaped yas toform a curved rear refiectorfor the bulb,l asi hereinafter described. y This reflector is secured as at 2O tothe upper portion ofthe casing 12.; The` bulb 21 passed through 'an' opening inv thereflector and is threaded orfotherwise' secured within thek socket 14. VThis bulb hasy a filamentofsuch form as togive van" iso-1l photometric curve ,substantially as indicated atea f fr It will be understood froml this diagriam- 'I matic illustration that the bulb is soformed as to throw its light generally in a plane eX` tendingthrough the centre of thefbulba-nd lyingtransversely' tothe aXisof the socket.4 g-Secured to the upper; portion ofthe 'casi in`g12;as aty 23` is fa tting, 24, substantially of; -invertedU-shape,zas shown in'iFig. 2-of the drawingsi- This fitting is flanged as'at 25 tointerlock with a flange 26 upon an upper shade27. .-The latterf'part is ofltra'nslucent light diffusing glass-and is removable fas fori` Vreplacement through the removal l of :the

fitting 24.- j It is falsoyrto berno'tedgthat fthe A shade 27 clears the bulb 21 by a sufficient l space to permit removal and replacement of the bulb without requiring prior removalfof the shade.

In the action of this device, it is to be noted the bulb throws its greatest amount of light in a downwardly and outwardly inclined direction with respect to the wall 10.

made of the above invention and as various changes might be made in the embodiment above set forth, it is to be understood that all matters herein set forth or shown in the accompanying drawings are to be interpreted as illustrative and notin a. limiting sense.

What I claim is:

Vl. Inftfhe construction ogf berth -ligfhtS and the like, `in combination, a wall, an electric bulb formed to throw a maximum Yintensity ofi-ight in a predetermined direction and a lesser intensity l.off lig-ht in -a direction substantially at right angles to said predetermined direction and mounted adjacent ysaid wall, an inclined reflector adapted to reflect the light of maximum intensity from said bulb downwardly and outwardly with respect to said uwall and fa Itranslucent di-'Husing member mounted to diiiuse the flight of lesser intensity @from :said bulb extending 2in an upwardly inclined l direction from ksaid pulg A and ou-t O Athe 4path fof isaifd downward i t.

g2. lIn ithef'cons'truction of berth lights and the `flike, in eembination,..a wall, an electric bulb-.formed to thro'w a maximum intensity of light in a predetermined fdirection and ,-a lesser intensity of light in va direction i's'u'bstautially ,at right .angles :to :said predetermined direction and mounted adjacent :said

wall, an :inclined reflector adapted to lreflect the ilifglit :of maximum interi-sity :from said bulb downwiardly and outwardly withA ,respect @to :said wall and a translueentfjdiiusing :member mounted Ito fdifiuse the '-liglrt 'of lesser intensity from said ibulb extending in kan upwardly -sincliined direction from said bulb and out ofthe path .oifsaid downward light, 'said bulb being mounted 1a recess in said wall. E

1 ln the :construction or bertbjliglts and the like, 'in cembinatioma wail provided with an aperture, a member meunftedwifthin said apjerture and secured to said walilto form an enclosed recess therein, a shade removably secured `to the upper Aporti-on of said member, a socket ymounted within said member, a. reflector mounted within said --member, said 4socket being positioned :between -and -enclosedyby said reflector and said irst member and aI bulb coacting with saidgretlectoriand mounted in said socket.

4. In the construction of berth lights and lthe :like,1in combination, a wall, an electric ing voutwardly and upwardly from `said In the construction of berth 'lights and the like, .in combination, ya wall, means vforming a recess ywithin Said wall, 'an electric bulb -mounted within said yrecess and yupwardly `inclined with respect Ito said wall, a reflector adapted Ato throw light v:from said bulb downwardly and outwardly wlithwrespect to said Vwall and a translucent diffusing fmember adapted to d-iluse Slight passing outwardly and upwardly from said bulb andk outrof ythe .path of said .downward light. In testimony whereof, I have signed :my name to this specific-ation this A26th April, 1920.

EDWARD s. M. Melonen. f 

